Dailypuzzle seems to be on vacation, and the solution to PCFilho's Mate in 3 Puzzle of May 17th (posted at http://jornalheiros.blogspot.in/) is 1.Qg7+; Rxg7 (forced) 2. Rxc8+; Rg8 (forced) 3 R(either 1 of the 2)xg8#